What is the formula for iron sulfide?
FeSIron(II) sulfide / Formula
Pyrrhotite, which is chemically called iron sulfide, has the ideal formula FeS (Fe = iron, S = sulfur).
What is oxidized in iron II sulfide?
Iron sulfide was mainly oxidized to sulfate (SO42−) (97.8%) by persulfate, and to elemental sulfur (S(0)) (5.8 and 25%), thiosulfate (S2O32−) (27.7 and 11.3%) and SO42− (66.5 and 63.7%) by chlorine and peroxide, respectively.
Does iron sulfide oxidize?
2 Processes Occurring Within Iron Sulfide Ores. Iron sulfide oxidation reactions (mainly pyrite and pyrrhotite) tend to create an acidic environment, releasing protons, as observed in the oxidation reaction of pyrite in the presence of oxygen and water. A similar dissolution reaction occurs for pyrrhotite.
What is the correct name for fe2o3?
Ferric Oxide (fe2o3)
How do you write sulphide?
Sulfide (British English also sulphide) is an inorganic anion of sulfur with the chemical formula S2− or a compound containing one or more S2− ions. Solutions of sulfide salts are corrosive.
What is the oxidation number for iron in iron II sulfide?
Iron sulfide is the chemical compound FeS, a black solid. It is made of iron and sulfide ions. FeS has iron in its +2 oxidation state.
How do you solve oxidation equations?
A redox equation can be balanced using the following stepwise procedure: (1) Divide the equation into two half-reactions. (2) Balance each half-reaction for mass and charge. (3) Equalize the number of electrons transferred in each half-reaction. (4) Add the half-reactions together.
Which equation represents an oxidation-reduction reaction?
CH₄ + 2O₂ → CO₂ + 2H₂O is the equation that represents an oxidation-reduction reaction. An oxidation-reduction reaction is called the redox reaction. Redox reaction is a type of chemical reaction that involves a transfer of electrons between two species in turn the oxidation states of atoms are changed.
What is iron formula?
Iron’s chemical name is ferrum, from the Latin word ferrium. This is how iron got Fe as its symbol. The format of nonmetal elements formula with iron is Fe X, where X is a nonmetal element or compound. The number of protons in iron’s nucleus is 26, which makes its atomic number also 26.
What is the chemical reaction of iron sulfide and oxygen?
This forms during the chemical reaction between hydrogen sulfide (H 2 S), which occurs naturally in produced hydrocarbons, and oxidized iron (Fe 2 O 3 ), or rust, that can line a vessel, tank, or pipe. When iron sulfide is exposed to oxygen it reacts rapidly, releasing large amounts of heat.
What is the solubility product of iron sulfide?
In these cases, the solubility product of iron sulfide was presented in terms of iron and bisulfide ions, HS −, because the concentration of the S 2− ion is insignificant in solution and the uncertainty of the secondary equilibrium constant of H 2 S (K 2) is considerable.
What factors affect the solubility of iron sulfides in silicate magma?
Under constant pressure, five factors are important for the solubility of iron sulfides in a silicate magma: (1) oxygen fugacity (ƒO 2), (2) temperature, (3) FeO and TiO 2 contents, (4) oxidation state, and (5) mafic versus felsic components (Naldrett, 2004).
What is the thermodynamics of sulfide oxidation?
Figure Figure1A1A describes the thermodynamics of sulfide oxidation in one-electron transfers of oxygen in four steps from O2to O2−to H2O2to OH• to produce H2O. Only OH• can lead to formation of HS•. Even the oxidation of sulfide by O3and 1O2are unfavorable. However, the two-electron transfer reactions (e.g., Eq.